Eight people were arrested Wednesday in the second phase of the Port Huron and Marysville police departments' investigation into prostitution and human trafficking in the Blue Water Area.

The Neighborhood Enforcement Team focus this phase on individuals advertising prostitution services and seeking those services that blatantly operate on social sites such as backpage.com, according to a statement.

The locations of the stings varied from motels and hotels to private residences in the Port Huron and Marysville area.

Undercover officers used the social sites to pose as both prostitutes and those seeking prostitution services. Those stings resulted in eight arrests Wednesday, with one of those also being charged with carrying a concealed weapon.

According to the press release, that Wednesday's stings being the total number of arrests in the operation to more than 30.

Further stings are being planned, according to the statement. Prostitution or engaging the use of a prostitute is a misdemeanor that carries a 93-day jail sentence and/or $500 fine. Carry a concealed weapon is a five-year felony.

The NET team consists of members of the Port Huron Police Department, Marysville Police Department, Michigan State Police, U.S. Customs and U.S. Border Patrol.

In November, NET announced it had made 20 arrests in the first round of stings.

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This raw footage shows one of the busts carried out as part of the nationwide operation to take down sex traffickers. The FBI's Operation Cross Country arrested 150 pimps and other suspects and recovered 149 sexually exploited children.

Contact Liz Shepard at (810) 989-6273 or lshepard@gannett.com. Follow her on Twitter @lvshepard.